Impkoyed tool foe cteanihg boilee tubes



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Be it known that SIDNEY VAN 'Amrum of Binghamton, in the county of Broome, and State of New.. York, have invented a new and improved Tool for Cleaning Boiler Tubes; and I do hereby declare that the follow-l .ing is a full, clear, and exact description thereof, which will enable others skilled in the art to 'make and use the same, referencebeing had to the acoompanying'drawings, forming a part of this specification, in which- Figure 1 represents a sectional side elevation of this invention. A

Figure- 2 is an end view of the same.

Similar letters of reference indicate like parts.

This invention consists in a tool, composed of three or more spring-arms, made of elastic sheet-metal, and twisted so that the same will yield both ways. The outer ends of Said spring-arms are formed into segmental scrapersfand they are provided with cams on the `inside-and outside of said scrapers, whereby the operation of introducing the saidtolin a tube, or removing it therefrom, is materially facilitated.

A. represents a handle or rod, made of lwoodorof any other suitable material, of sufficient length to enable the operator to reach through the boiler tube to befcleaned. p To the end of this rod are secured the springarms B, which are made of thin and elastic sheet metal, sheet steel being used by preference, and which are twisted, as clearly shown in iig. 1 of the drawing, so that they are rendered yielding in two directions, and that the tool is enabled to accommodate itself to the interior of the boiler tube lto be cleaned. The outer ends'- of the arnis, B, are bent, so as to form segmental Scrapers C, and cams a b on the inside and outside of these Scrapers serve to facilitate the'operation of introducing the tool into the tubes" to be cleaned, andof removing it therefrom. The cams, a, on the outside of the Scrapers are formed by turning the ends of the arms B at right angleslwith those parts which form the Scrapers, and the cams, ZJ, are formed by projections on vthe edges ofthe arms,` close to the Scrapers, asV clearly shown in iig. 1 ofthe drawing. The segmentalv scrapers are made of such a size that they Voverlap each other, and that, by their action, the entire inner surface of the tube to be cleaned can ,be reached. By the action of the double-yielding spring-arms my Scrapers are enabled to accommodate themselves readily to the inner surfaces of the tubes, and to avoid all inequalities or rough places which may occur on said surfaces; and, furthermore, my Scrapers are cheap, and not liable to wear out for a long time. 4

Having thus described my,invention, what I claim isl y The doubly yielding spring-arms B, in combination with the segmental sc'lapers C, and cams a b, constructed and operating substantially as and for the purpose set forth.

The above specification of my'invention-` signed by me this 21st day `of August, 1866.

` 4SIDNEY VAN AUKEN.

Witnesses: I

W.- HAU'NN, ALEX. F. ROBERTS.- 

